Electrical contact.



H. J. WIEGAND.

ELECTRICAL CONTACT.

APPLICATION FILED 111111.13. 1914.

Patented Dec. 1, 1914.

UNITED STATES PATENT O FICE -HEN'BY I. WIEGAND. OF MILWAUKEE, WISCONSIN.

nLECTRICAL coN'rAc'r.

. Application filed March 13.

To all who-m it may concern:

Be it known that I, HENRY J. \VIEGAND, a citizen of the United States," residing at Milwaukee, in the county'of Milwaukee and State of \Visconsin, l'1av'einvented new and .7

useful Improvemcntsin Electrical Contacts, of which the following is a full, clear, coneise, and exact description, reference being had to the accompanying dra\\'ing,.forining a part of this specification.

This invention-relates to electrica /eontacts, and this application is a continuation of my application filed August 2, ltill, and issued April H, 1914, Patent No. 1,092,880, as to all the common subject matter of the two applications.

The various objects and advantages of the invention will appear hereinafter in connec tion with the description-of the two embodim nts thereof illustrated in the accompanying drawing, wherein,

Figure 1 is a perspective view of ronisrt, Fig. 2 is a similarview of the second form of contact, Fig 3' is a bottom plan-view of thel latterfand, Fig. 4 is a sectional view of the contact shown in Fig.2 mounted on a. suitable basel e v The contacts are particularly adapted for of one form use in rh'eostats wherein they are connected to resistance. elements and 'with said elements are embedded in plastic material, but having their surfaces exposed to be engaged by a suitable controlling member. Each contact comprises in general, a. sheet metal punching having-a (lat contacting surface with depending lugs for seating the same on a base'and laterally extending lugs for connection with suitable conductors.

Referring more specifically to the drawing. there is shown in' Fig. l a contact formed of an obiong'nustal strip punched to substantially inverted U-shape thereby providing a raised (at contactsurface lwith depending end walls or supports .2,- lhcse end portions are slitted longitudinally and the metal I at one side of the slits, preferably at diagonally opposite corners of the contact, is curled upwardly to provide lateral ears 3. The metal at the other side. of the slits e.\' tends dow'uwari'lly and constitutes a pair of hugs 4. I

Fig. ".2 illustrates a contact having the. gen eral features of that shown in Fig. l, and having, in addition, side walls 5. In this form. the contact is stamped from a substaar pccificatton of Letters Patent.

Patented-Dec. 1, 1914 191.4. Serial 1x0 824547.

tially square sheet having restricted slitsfi to facilitate its stamping. These slits, however, are substantially closed when the contact is punched. In this" embodiment, also the lugs 3 are projected at right angles to' the end walls 2- .and provide supporting bases 7 flush with the free margins of the contact.

nectcd to the attaching ears 3 oft-he contact and the same then covered with afs'uitable insulating cement 11, or other plastic ma tel-nil, which anchors the contact to the base and provides a protective casi'ngfforv the re sistance elen'ient, Hon-ea'n-th mised' -sur face 1 of the contactprotrndesf'slightly .above the material 11 and thus'f f ni' h a contacting face with which 7 coiit'rolling member lily engage. r

The contact described is eritreinely rigid and is adapted for secure attachment to a.

base without the -use of screws or other special fastening means. Furthermore, the

' device is exceedingly simple and cheap to manufacture and carries an effective anchor-- ing portion to be held by tin-insulating conipOtllLCl 11. lt is also to be noted that the contacts may be arranged closely adjacent to each other since the. ill l and ears 3 are at opposite ends. and the sides theifjf remain unobstructed and sheer. I

What l claim as new and tl'esireto seeune lrv ln-ttors. latont is:

l. sheetmetal contact. ha'vin substan; tially: arallel and prrtions' aud an internn=diate contart portion, saidend portir s being longitudinally divided to provideeachwith a connecting lu; and :1 lug to engages supporting base. i L. A shoot metal contact of 'substgnitiallx' infortcd U-shapo in longitudinal section and having its ends slittrd to provide each with two lugs. one of said lugs being in the plane thereof to project into a supporting base and the other being offset therefrom for rircuit connection.

3 A sheet metal contact of substantially inverted U-shape in longitudinal section and having its ends slitted to provide each with two lugs, one of said lugs being in the plane thereof to project into a supporting base and the other oflset therefrom, the lugs at one end of said contact being in reversed relation with respect to'those at the other end. 1

4. A sheet metal contact of substantially inverted U-shape in longitudinal section and of substantially uniform width throughout,

said contact being provided with depending supporting lugs and an end connection lug.

5. As an article of manufacture, a sheet metal contact provided with parallel end portions and an intermediate portion having sheer sides, said end portions serving to support said intermediate portion in an elevated position and also serving for connection of said contact in an electric circuit.

6. As an article of manufacture, an electrical contact comprising a sheet metal stamping provided w th a substantmlly rectangular contacting surface and depending end and side walls, certaln opposed walls thereof .being sheer throughout and the other opposed walls having offset lugs for Ron'r. HAPMAN, H. A. SEDGWICK. 

